Clamp for flexible conduit attaching nuts



May 14, 71946. A H. CADMAN 2,400,338

CLAMP FOR FLEXIBLE CONDUIT ATTACHING NUTS Filed July 25, 1945 f 0 \H W H I; 50 30 28 7. 25 17 25 30 17 III II Z6 Z4 \H H H 24 1 n11 II In 6 29 I 16 2 16 2 a1 a0 .21 53 l 16 INVENTOR. ARTHURH CAaMA/v A TTORNE Y5 I cushion pad in detail.

I Patented May 14,

i .zsoosss I i l CLAMP roit FLEXIBLE comm time.

, mo NUTS Arthur lI. Cadman,.0range, N. J., assignor to Breeze Corporations, Inc

poration of New Jersey Application July 23, 194:; Serial No. 495,953

This invention relates to clamping devices and more specifically to such as are adapted to positively prevent an attachment nut, carried by a cylindrical element, from becoming loose and displaced; relative to the part on which it is engaged.

While the present'shcwing is that of a com Newark, N. 1., a corannulus n having an outstanding flange is at its outer end, which is shaped to engage a correhector nut on a flexible tubularconduit, it will.

be apparent that the deviceis-suited to a wide ran e of usefulness in other fields, where'it becomes necessary to avoid movement of a rotative part, relative to a stationary cylindrical part; thus, the device is equally applicable to restrain a ring-dike element of any kind-from undesired l rotation on a plain cylinder, even when subjected to jars, shocks. vibrations. and like adverse conditions tending to loosen the same.

An obiect of the invention is to provide a keeper clamp. suited to surround a tubular element, havinl' a" rotatable member at one terminaL; with means to positively restrain the rotatable memher from turning, when-in an adjusted position. on the tubular element.

P A further feature is in the provision of a clamp having a cushion on its inner surface effectually avoiding abrasion or other damage of the part to which it is applied.

anethesmml is to provide aclamphaving means to adiustably engage in any of the creased corrugations formedin the periphery of a normally rotative element, used in connecting a tubular member to a fixed member;

These and other minor aims are attained by the novel, yet simple, construction, combination and arrangement ofparts hereinafter described and illustratedin the accompanying drawing.

constituting a graphical component of this disclosure, and in which: a

Figure 1 is a front elevational view of-an embodiment of the invmtion, showing its applicametallic conduit it covered with braided tapes is,

which may consist of a single narrow metal strand, a flattened group of wires,- or similar guards.

Set securely in the end of the conduit is an spending seat on a part I! to which it is to be engaged by screw threads 22.

A cylindrical nut is freely fitted on the ex- 7 tending end or the conduit ll, over the annulus I1, and provided with an internal flange 2| at the rear, inner end oi the screw threads 22, the

flange 2| abutting the flange. it of the annulus.

' The periphery of the nut 20 has formed in its entire circumference a plurality of closely adjacent longitudinal. shallow grooves 23 extending preferably over its entire surface; other types of corrugations, perforations, or even flat surfaces;

may be employed if desired.

A clamp band 24, made of resilient sheet metal, is formed to loosely engage over the conduit and provided with substantially radial, outstanding v flanges 25 having'openings for the passage of a clampbolt 2|. One of the flanges is enveloped by a spring metal loop 21, its outer member presenting' prongs 22 and 20 adapted to engage the j threads of the-bolt, in the manner of a nut, and

also tolock the threads against casual loosening.

Extending from one edge or the band, in opposed relation to each other, and at right angles 1 with the flanges 28, are two arms 30, each outbent to clear the nut 20 and having extensions to reach over the grooves in the nut.

: Each of these arms, at their outer narrow pore tions, is shaped concavely, thereby forming detents II adapted to engage in the grooves to pre- .vent the nut from turning when in adjustment;

- In order toavoid abrasion of the conduit cover- 8, and also to improve the adhesion, a strip of cushioning material 22, as rubber; is disposed over the entirelnner area of the band 24, the

edges of the strip being turned over upon the outer surface of the band, as at I3, forming chan nels for the band edges by which the cushion is held in place.

' In operation, the clampbolt is slackened to permit the clamp to pass freely over. the conduit,

the'nut tightened on the part towhich it is applied, the clamp moved to engage its detents with the corrugated or serrated surface of the nut, and then the bolt tightened to rigidly secure the clamp on the conduit. v I

It will be understood that the detents-3i may be made in different shapes to conform with the exterior of the nut; also the clamping means for the band 24 may be varied from that shown, and

that the cushioning device may be of different forms from thatindicated.

coupling nut to cause such engagement, said nut to beinz freely rotatable on said conduit but limited in lineal movement, means to prevent unintentional rotation of said nut comprising parallel grooves around the periphery oi the nut, said grooves being parallel to the axis of the nut, and

amnba d adiustably secured on said conduit having one ormore arcuate pronzs the side edges or which are suited vto lockinzly engage in the grooves 01 said nut.

ARTHUR H. CADMAN. 

